Si34-603 Troubleshooting by Indication on the Remote ControllerTroubleshooting 1613.26 “J7” Outdoor Unit: Malfunction of Thermistor (R7T) forOutdoor Unit Liquid PipeRemoteControllerDisplayJ7ApplicableModelsRX(Y)MQ4~6PMethod ofMalfunctionDetectionMalfunction is detected from the temperature detected by the liquid pipe thermistor.MalfunctionDecisionConditionsWhen a short circuit or an open circuit in the heat exchange thermistor is detected.SupposedCauses Defect of thermistor (R7T) for outdoor unit liquid pipe Defect of outdoor unit PC board (A1P)Troubleshooting∗ Refer to thermistor resistance / temperature characteristics table on P231.(V3074)CautionBe sure to turn off power switch before connect or disconnect connector,or parts damage may be occurred.Resistanceis normal whenmeasured afterdisconnecting the thermistor(R7T) from the outdoorunit PC board.(3.5kΩ~360kΩ)Replace outdoor unit PC board(A1P).Connect the thermistor and turnon again.NONOReplace the thermistor (R7T).YESYESConnectoris connected to outdoorunit PC board(A1P).
